Weft feeler for automatic looms for weaving



May 30, 1933. e. 'DJEDERICHS "EFT FOR AUTOMATIC LOOKS 'FOR'WBAViNG FiledJan. 30, 1931 Patented May 39, 1933 GUSTAVE DIEDERICHS, FSTE-COLOMBE-LES-VI ENNE-ON-T;HE-BHONE, FRANCE WEFT FEELER FOR AUTOMATICLOOMS FOR WEAVING- Application filed January 30, 1931, Serial No.

The present invention relates to improvements in weft feelers forautomatic looms for weaving employing directly the yarn on cardboard orpa er tubes to cause the changing of the shutt e when the tube becomesexhausted.

The invention comprises a bracket aflixed to the loom frame, an armmounted on the bracket to slide normally to the shuttle to directlyengage the weft on the shuttle tube and a spring controlled leverpivoted in a slot in the bracket normally engaging both the shuttle sideand a stop on the sliding arm but which when the sliding arm moves owingto a shortage of weft on the tube releases the shuttle changingmechanism.

It will be described with reference to the accompanying drawing which isgiven by way of example.

Fig. 1 is a front elevation showing the position with the shuttle inoperation when the tube is carrying sufiicient yarn.

Fig. 2 is a vertical section through the feeler on a line 2-2 Fig. 1.

Fig. 3 is a view similar to Fig. 1 at the moment of knocking oif.

Fig. 4 is the corresponding section on line 4.-et Fig. 3.

In the embodiment of the invention here shown, on the frame of the loomis mounted a bracket a which is formed with a slot 6 and a socket c.

In the slot 6 a lever 03 provided with a pivot pin 6 slides. This leveris drawn towards the shuttle n against which it bears by a spring Saidlever is provided near its free end with an abutment it having anoblique edge which is parallel to that of the stopprojection hhereinafter described.

In he socket c a rod 9 having a stop projection h slides normally to theshuttle a. The outer end of the stop projection is oblique, as shown.Said rod also has a fork 11 which projects thereabove.

This rod is continuously pushed towards the neck by spring is.

It will be easily seen that the lever cl which bears against the wood ofthe shuttle a may undergo two movements by its pivoting about the pin 6in the slot 7), one perpendicular to 512,457, and in France September24, 1930.

the axis of the shuttle and the other rotary 1n the plane of thebracket.

Thus when there is yarn on the tube Z the rod 9 and the lever 61 occupythe position shown in Figs. 1 and 2 that is to say are 5 moved parallelwith the axis of the socket 0 and the axis of the slot 1).

As the weft is used up the diameter of the tube diminishes and the rod 9moves upwards more and more under the action of the spring towards theaxis of the spindle of the shuttle.

When the minimum quantity of yarn is reached necessitating a change ofshuttle, the fork 2' passes around the tube Z (Fig. 4) and 5 the rod 9moves to the position shown (Fig. 3). At this moment, the stop it movesout of the way and allows the rotary movement of the lever cl whichpushes in the direction of the arrow a rod m which operates the shuttlechanging mechanism.

This feeler entirely mechanical and operating surely and softly allowsfor reducing to a minimum the amount of yarn left on the tube.

As will be seen and as follows from the preceding, the invention is notlimited to the methods of carrying it out before mentioned nor to itsdifferent parts but embraces on the other hand all variations of the rodg whether or not ended by a fork c.

Having now particularly described and as certained the nature of my saidinvention and in What manner the same is to be performed, I declare thatwhat I claim is:

A weft feeler-for looms, comprising, in combination with a shuttle andshuttle, tube, and with a movable rod for operating shuttle changingmechanism, a supporting element for attachment to the loom frame, havinga guide for the'said operating rod and also having a slot normal to theshuttle and guides also normal to the shuttle,-a feeler rod normal tothe shuttle, mounted for movement in said guides and having a fork toengage astride the shuttle tube and also having a stop projectionprovided with an oblique end, a spring to move the feeler arm toward thetube, a lever having a pivot mounted for movement in the slotof thesupporting element, said lever being arranged with its free endengageable with the shuttle and also provided with a stop projectionhaving an blique end slidably engaged with the stop pro- 5 jection ofthe feeler arm, and a spring active on said lever to cause the same tomove said operating rod when the stop projection of said lever isreleasedby that of the feeler rod when the lattermoves astride ofthetube.

In witness whereof I have hereunto setmy hand.

GUSTAVE DIEDER'IGHS.

